Archived App (Last seen on 21 Aug 2025)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
This app helps airline and corporate aircraft operators achieve significant operational savings by calculating the optimum cruise speed for flights based on pilot-inputted conditions and aircraft-specific data. It offers advanced features for cost, fuel, and time optimization, including level change analysis and turbulence margin adjustments.
What's New in Cost Index
2.2
January 3, 2017
This app has been updated by Apple to display the Apple Watch app icon. Landscape orientation now supported!
MoreFAQ
What is the primary function of Cost Index?
Cost Index calculates the optimum cruise speed for flights to minimize operational costs. It uses complex algorithms based on pilot-inputted conditions and aircraft-specific data to achieve this.
Who developed Cost Index?
Cost Index was developed by airline pilots for airline and corporate aircraft operators. The developer is Flight Efficiency Limited.
Is Cost Index available on multiple devices?
Yes, Cost Index is available for iPhone, iPad, and iPod devices, indicating broad compatibility within the Apple ecosystem.
How often is Cost Index updated?
The app attempts to update its operational data once it becomes 24 hours old. The last update was on January 3, 2017, with version 2.2.
Can Cost Index help with turbulence?
Yes, when buffet margin data is detected, a turbulence button can increase the buffet margin from 1.3g to 1.6g if selected ON, enhancing safety.
Does Cost Index offer insights into level changes?
Yes, the 'Level Change' feature provides unique functionality to aid crew in deciding whether to climb or descend for operational reasons, displaying cost, fuel, and time differences.
What is the user rating for Cost Index?
Cost Index has a perfect rating of 5.0 stars based on 1 review, indicating a highly positive user reception.
Does Cost Index have ads?
No, Cost Index does not contain advertisements. It is a free application without any ad-supported elements.
